She scored a number one chart hit last month and the Blackburn singer is currently enjoying success with her debut album Songs From The Tainted Cherry Tree.

Diana became a hit with millions of TV viewers when she took part in ITV’s X Factor in 2008 and won the approval of judges like Simon Cowell and Louis Walsh.

Since then, she has taken London’s West End by storm with her portrayal of Little Voice in the hit stage show The Rise And Fall Of Little Voice.

Sue Kemp, general manager of Warwick Castle, said: “We have seen a huge demand for tickets since they went on sale in March and now Diana has been added to the line-up, I have no doubt that the last few tickets will sell like hot cakes.”

Brit and MOBO award –winning JLS will be singing a selection of hits from their self-titled, chart topping debut album.